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    <pre class="prettyprint lang-js">/**
 * @class Ext.Element
 */
<div id="prop-Ext.Element-VISIBILITY"></div>/**
 * Visibility mode constant for use with {@link #setVisibilityMode}. Use visibility to hide element
 * @static
 * @type Number
 */
Ext.Element.VISIBILITY = 1;
<div id="prop-Ext.Element-DISPLAY"></div>/**
 * Visibility mode constant for use with {@link #setVisibilityMode}. Use display to hide element
 * @static
 * @type Number
 */
Ext.Element.DISPLAY = 2;

Ext.Element.addMethods(function(){
	var VISIBILITY = "visibility",
		DISPLAY = "display",
		HIDDEN = "hidden",
		NONE = "none",		
		ELDISPLAY = Ext.Element.DISPLAY;
	
	return {
		<div id="prop-Ext.Element-originalDisplay"></div>/**
	     * The element's default display mode  (defaults to "")
	     * @type String
	     */
	    originalDisplay : "",
	    visibilityMode : 1,
	    
	    <div id="method-Ext.Element-setVisibilityMode"></div>/**
	     * Sets the element's visibility mode. When setVisible() is called it
	     * will use this to determine whether to set the visibility or the display property.
         * @param visMode Ext.Element.VISIBILITY or Ext.Element.DISPLAY
	     * @return {Ext.Element} this
	     */
	    setVisibilityMode : function(visMode){	  
	        this.visibilityMode = visMode;
	        return this;
	    },
	    
	    <div id="method-Ext.Element-animate"></div>/**
	     * Perform custom animation on this element.
         * <div><ul class="mdetail-params">
         * <li><u>Animation Properties</u></li>
         * 
	     * <p>The Animation Control Object enables gradual transitions for any member of an
	     * element's style object that takes a numeric value including but not limited to
	     * these properties:</p><div><ul class="mdetail-params">
         * <li><tt>bottom, top, left, right</tt></li>
         * <li><tt>height, width</tt></li>
         * <li><tt>margin, padding</tt></li>
         * <li><tt>borderWidth</tt></li>
         * <li><tt>opacity</tt></li>
         * <li><tt>fontSize</tt></li>
         * <li><tt>lineHeight</tt></li>
         * </ul></div>
         * 
         * 
         * <li><u>Animation Property Attributes</u></li>
         * 
         * <p>Each Animation Property is a config object with optional properties:</p>
         * <div><ul class="mdetail-params">
         * <li><tt>by</tt>*  : relative change - start at current value, change by this value</li>
         * <li><tt>from</tt> : ignore current value, start from this value</li>
         * <li><tt>to</tt>*  : start at current value, go to this value</li>
         * <li><tt>unit</tt> : any allowable unit specification</li>
         * <p>* do not specify both <tt>to</tt> and <tt>by</tt> for an animation property</p>
         * </ul></div>
         * 
         * <li><u>Animation Types</u></li>
         * 
	     * <p>The supported animation types:</p><div><ul class="mdetail-params">
         * <li><tt>'run'</tt> : Default
	     * <pre><code>
var el = Ext.get('complexEl');
el.animate(
    // animation control object
    {
    	borderWidth: {to: 3, from: 0},
    	opacity: {to: .3, from: 1},
    	height: {to: 50, from: el.getHeight()},
    	width: {to: 300, from: el.getWidth()},
    	top  : {by: - 100, unit: 'px'},
    },
    0.35,      // animation duration
    null,      // callback
    'easeOut', // easing method
    'run'      // animation type ('run','color','motion','scroll')    
);
	     * </code></pre>
         * </li>
         * <li><tt>'color'</tt>
         * <p>Animates transition of background, text, or border colors.</p>
	     * <pre><code>
el.animate(
    // animation control object
    {
        color: { to: '#06e' },
        backgroundColor: { to: '#e06' }
    },
    0.35,      // animation duration
    null,      // callback
    'easeOut', // easing method
    'color'    // animation type ('run','color','motion','scroll')    
);
	     * </code></pre> 
         * </li>
         * 
         * <li><tt>'motion'</tt>
         * <p>Animates the motion of an element to/from specific points using optional bezier
         * way points during transit.</p>
	     * <pre><code>
el.animate(
    // animation control object
    {
    	borderWidth: {to: 3, from: 0},
    	opacity: {to: .3, from: 1},
    	height: {to: 50, from: el.getHeight()},
    	width: {to: 300, from: el.getWidth()},
    	top  : {by: - 100, unit: 'px'},
    	points: {
    	    to: [50, 100],  // go to this point
    	    control: [      // optional bezier way points
    	        [ 600, 800],
    	        [-100, 200]
    	    ]
    	}
    },
    3000,      // animation duration (milliseconds!)
    null,      // callback
    'easeOut', // easing method
    'motion'   // animation type ('run','color','motion','scroll')    
);
	     * </code></pre> 
         * </li>
         * <li><tt>'scroll'</tt>
         * <p>Animate horizontal or vertical scrolling of an overflowing page element.</p>
	     * <pre><code>
el.animate(
    // animation control object
    {
    	scroll: {to: [400, 300]}
    },
    0.35,      // animation duration
    null,      // callback
    'easeOut', // easing method
    'scroll'   // animation type ('run','color','motion','scroll')    
);
	     * </code></pre> 
         * </li>
         * </ul></div>
         * 
         * </ul></div>
	     * 
	     * @param {Object} args The animation control args
	     * @param {Float} duration (optional) How long the animation lasts in seconds (defaults to <tt>.35</tt>)
	     * @param {Function} onComplete (optional) Function to call when animation completes
	     * @param {String} easing (optional) {@link Ext.Fx#easing} method to use (defaults to <tt>'easeOut'</tt>)
	     * @param {String} animType (optional) <tt>'run'</tt> is the default. Can also be <tt>'color'</tt>,
	     * <tt>'motion'</tt>, or <tt>'scroll'</tt>
	     * @return {Ext.Element} this
	     */
	    animate : function(args, duration, onComplete, easing, animType){	    
	        this.anim(args, {duration: duration, callback: onComplete, easing: easing}, animType);
	        return this;
	    },
	
	    /*
	     * @private Internal animation call
	     */
	    anim : function(args, opt, animType, defaultDur, defaultEase, cb){
	        animType = animType || 'run';
	        opt = opt || {};
	        var me = this,	        	
	        	anim = Ext.lib.Anim[animType](
		            me.dom, 
		            args,
		            (opt.duration || defaultDur) || .35,
		            (opt.easing || defaultEase) || 'easeOut',
		            function(){
			            if(cb) cb.call(me);
			            if(opt.callback) opt.callback.call(opt.scope || me, me, opt);
		            },
		            me
		        );
	        opt.anim = anim;
	        return anim;
	    },
	
	    // private legacy anim prep
	    preanim : function(a, i){
	        return !a[i] ? false : (Ext.isObject(a[i]) ? a[i]: {duration: a[i+1], callback: a[i+2], easing: a[i+3]});
	    },
	    
	    <div id="method-Ext.Element-isVisible"></div>/**
	     * Checks whether the element is currently visible using both visibility and display properties.	     
	     * @return {Boolean} True if the element is currently visible, else false
	     */
	    isVisible : function() {
	        return !this.isStyle(VISIBILITY, HIDDEN) && !this.isStyle(DISPLAY, NONE);
	    },
	    
	    <div id="method-Ext.Element-setVisible"></div>/**
	     * Sets the visibility of the element (see details). If the visibilityMode is set to Element.DISPLAY, it will use
	     * the display property to hide the element, otherwise it uses visibility. The default is to hide and show using the visibility property.
	     * @param {Boolean} visible Whether the element is visible
	     * @param {Boolean/Object} animate (optional) True for the default animation, or a standard Element animation config object
	     * @return {Ext.Element} this
	     */
	     setVisible : function(visible, animate){
		    var me = this,
                dom = me.dom,
                isDisplay = (me.visibilityMode == ELDISPLAY);
                
            if (!animate || !me.anim) {
                if(isDisplay){
                    me.setDisplayed(visible);
                }else{
                    me.fixDisplay();
                    dom.style.visibility = visible ? "visible" : HIDDEN;
                }
            }else{
                // closure for composites            
                if(visible){
                    me.setOpacity(.01);
                    me.setVisible(true);
                }
                me.anim({opacity: { to: (visible?1:0) }},
                        me.preanim(arguments, 1),
                        null,
                        .35,
                        'easeIn',
                        function(){
                             if(!visible){
                                 dom.style[isDisplay ? DISPLAY : VISIBILITY] = (isDisplay) ? NONE : HIDDEN;                     
                                 Ext.fly(dom).setOpacity(1);
                             }
                        });
            }
            return me;
	    },
	
	    <div id="method-Ext.Element-toggle"></div>/**
	     * Toggles the element's visibility or display, depending on visibility mode.
	     * @param {Boolean/Object} animate (optional) True for the default animation, or a standard Element animation config object
	     * @return {Ext.Element} this
	     */
	    toggle : function(animate){
		    var me = this;
	        me.setVisible(!me.isVisible(), me.preanim(arguments, 0));
	        return me;
	    },
	
	    <div id="method-Ext.Element-setDisplayed"></div>/**
	     * Sets the CSS display property. Uses originalDisplay if the specified value is a boolean true.
	     * @param {Mixed} value Boolean value to display the element using its default display, or a string to set the display directly.
	     * @return {Ext.Element} this
	     */
	    setDisplayed : function(value) {		    
		    if(typeof value == "boolean"){
	           value = value ? this.originalDisplay : NONE;
	        }
	        this.setStyle(DISPLAY, value);
	        return this;
	    },
	    
	    // private
	    fixDisplay : function(){
		    var me = this;
	        if(me.isStyle(DISPLAY, NONE)){
	            me.setStyle(VISIBILITY, HIDDEN);
	            me.setStyle(DISPLAY, me.originalDisplay); // first try reverting to default
	            if(me.isStyle(DISPLAY, NONE)){ // if that fails, default to block
	                me.setStyle(DISPLAY, "block");
	            }
	        }
	    },
	
	    <div id="method-Ext.Element-hide"></div>/**
	     * Hide this element - Uses display mode to determine whether to use "display" or "visibility". See {@link #setVisible}.
	     * @param {Boolean/Object} animate (optional) true for the default animation or a standard Element animation config object
	     * @return {Ext.Element} this
	     */
	    hide : function(animate){
		    this.setVisible(false, this.preanim(arguments, 0));
	        return this;
	    },
	
	    <div id="method-Ext.Element-show"></div>/**
	    * Show this element - Uses display mode to determine whether to use "display" or "visibility". See {@link #setVisible}.
	    * @param {Boolean/Object} animate (optional) true for the default animation or a standard Element animation config object
	     * @return {Ext.Element} this
	     */
	    show : function(animate){
		    this.setVisible(true, this.preanim(arguments, 0));
	        return this;
	    }
	}
}());</pre>    
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